Rod-like ruthenium(II) coordination polymers: synthesis and properties in solution

Kelch, Steffen; Rehahn, Matthias

doi:10.1039/a901638d

Cited by 37 publications

(26 citation statements)

References 17 publications

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“…Single-layered LEDs were produced with an external quantum efficiency of 0.1 % and a maximum luminance of 120 cd m À2 . Up to now, the most extensive study on terpyridine-based metal coordination polymers has been performed by [245,246] in which the rigid ligand was functionalized with two n-hexyl groups to enhance solubility ( Figure 67). From endcapping experiments combined with NMR investigations, the degree of polymerization demonstrated to be at least 30, which corresponds to a molecular weight of more than 36 000 g mol À1 .…”

Section: Polymers With Terpyridine Units In the Polymer Backbonementioning

confidence: 99%

“…Rigid rodlike polymer based on terpyridineruthenium(ii) complexes. [245,246] The above described approaches utilizing long side chains to yield soluble rodlike noncovalent polymers in solution have the drawback of using rather complicated building blocks and needing coupling procedures. Recently, a different approach to this class of macromolecules was published: It was demonstrated that 4'-chloro-2,2':6',2''-terpyridine can be treated very efficiently with different hydroxy-and thiolterminated molecules in the presence of KOH in DMSO to yield the corresponding oxo and thioethers in high yields.…”

Section: Polymers With Terpyridine Units In the Polymer Backbonementioning

confidence: 99%

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Macromolecules Containing Bipyridine and Terpyridine Metal Complexes: Towards Metallosupramolecular Polymers

Schubert

Eschbaumer

2002

Angew. Chem. Int. Ed.

692

333

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The ability of a broad range of N-heterocycles to act as very effective and stable complexation agents for several transition metal ions, such as cobalt(II), copper(II), nickel(II), and ruthenium(II), has long been known in analytical chemistry. This behavior was later utilized in supramolecular chemistry for the construction of highly sophisticated architectures, such as helicates, racks, and grids. The discovery of macromolecules by Staudinger in 1922 opened up avenues towards sophisticated materials with properties hitherto completely unknown. In the last few decades, the combination of macromolecular and supramolecular chemistry has been attempted by developing metal-complexing and metal-containing polymers for a wide variety of applications that range from filtration to catalysis. The stability of the polymer-metal complex is a fundamental requirement for such applications. In this respect, the use of bi- and terpyridines as chelating ligands is highly promising, since these molecules are known to form highly stable complexes with interesting physical properties with transition-metal ions. A large number of different structures have been designed for many different applications, but polymers based on the application of coordinative forces have been prepared in a few cases only. Furthermore, the synthetic procedures applied frequently resulted in low yields. During the last few years, strong efforts have been made in the direction of self-assembling and supramolecular polymers as novel materials with "intelligent" and tunable properties. In this review, an overview of this active area at the interface of supramolecular and macromolecular chemistry is given.

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Section: Polymers With Terpyridine Units In the Polymer Backbonementioning

confidence: 99%

Section: Polymers With Terpyridine Units In the Polymer Backbonementioning

confidence: 99%

Macromolecules Containing Bipyridine and Terpyridine Metal Complexes: Towards Metallosupramolecular Polymers

Schubert

Eschbaumer

2002

Angew. Chem. Int. Ed.

692

333

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“…In particular, terpyridine metal-complexes are widely used as building blocks in supramolecular and macromolecular chemistry. [1][2][3][4][5][6][7][8][9] An extremely interesting aspect of supramolecular polymers is represented by the reversibility of the terpyridine metal complexes. [1] Especially in polymer and material science, this feature will be a key factor for the design and application of smart and switchable materials in the near future.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Defined Metal‐Containing Supramolecular Block Copolymers

Meier

Lohmeijer

Schubert

2003

Macromol. Rapid Commun.

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The characterization of metal‐containing supramolecular polymers by gel permeation chromatography (GPC) or matrix‐assisted laser desorption ionisation time‐of‐flight mass spectrometry (MALDI‐TOF MS) is complicated because of the interaction of the charged materials with the GPC column material in the first case and fragmentation due to the applied laser energy in the latter case. In this contribution we report recent advances made for the characterization of supramolecular polymers based on terpyridine metal complexes utilizing GPC and MALDI‐TOF MS. In particular for GPC analysis, the choice of solvent and additive was found to be crucial for a successful characterization. Furthermore, MALDI‐TOF MS spectra of these compounds are not straightforward to interpret. Both aspects are discussed in detail with the result of a better understanding and improved analysis possibilities of the mentioned supramolecular polymers.

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“…Several new groups of rigid-rod polymers have been studied and developed rapidly since the 1980s (11)(12)(13)(14)(15)(16). All these are synthesized with conjugated structures and applied to optical and/or electrical usage.…”

Section: Introductionmentioning

confidence: 99%

Rigid‐Rod Polymers

Wang¹,

Jiang²,

Adams³

2011

Encyclopedia of Polymer Science and Technology

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Pursuing high strength and high modulus polymer fibers and novel electrooptical properties have motivated much research activity in rigid‐rod polymers in the past 40 years. In this review, we examine the synthesis, structures, and properties of rigid‐rod polymers with emphasis on polybenzobisoxazoles (PBO), polybenzobisthiazoles (PBZT) and polybenzimidazoles (PBI), beginning with their solution properties, especially lyotropic liquid crystallinity. High performance fibers spun from lyotropic liquid crystalline polyphosphoric acid (PPA) solution are described. The characterization of fiber properties including mechanical, thermal, electrical, and optical properties is summarized. PBO (Zylon) and PIPD (M5) fibers were successfully commercialized in high strength applications such as body armor, ropes, cables, and recreational equipment in the last 10 years, and we discuss the possible causes of rapid degradation of some PBO fibers. The concepts of molecular composites and nanocomposites provide new applications in antiballistic materials, fire protection, athletic equipment, cables, strings, ropes, cordage, sails, multilayer circuits, and catalyst supports. Recently, rigid‐rod polymer films have drawn attention in the electrooptical fields, especially for phosphoric acid (PA)‐doped PBI membranes (Celtec MEAs) in the applications of high temperature fuel cells. Computer simulation has been employed as a powerful tool to predict the properties of the rigid‐rod polymers.

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Rod-like ruthenium(II) coordination polymers: synthesis and properties in solution

Cited by 37 publications

References 17 publications

Macromolecules Containing Bipyridine and Terpyridine Metal Complexes: Towards Metallosupramolecular Polymers

Macromolecules Containing Bipyridine and Terpyridine Metal Complexes: Towards Metallosupramolecular Polymers

Characterization of Defined Metal‐Containing Supramolecular Block Copolymers

Rigid‐Rod Polymers

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